Finding the Third Proportional to 148,428 and 314,568

Step by Step Solution

1. Step 1: Write the proportion equation
   148,428 : 314,568 = 314,568 : x
2. Step 2: Convert to fraction form
   148,428/314,568 = 314,568/x
3. Step 3: Cross multiply
   148,428x = 314,568 × 314,568
4. Step 4: Simplify right side
   148,428x = 98,953,026,624
5. Step 5: Solve for x
   x = 98,953,026,624/148,428
6. Step 6: Final answer
   x = 666,673.58